2026-07-22 · 5 min read
Mercedes GLC Coupe Spark Plug Replacement Malaysia
GLC Coupe M274/M254 uses iridium spark plugs — replace every 60,000 km. OEM Bosch or NGK iridium. Malaysia workshop cost RM 300–500 including labour.
GLC Coupe Spark Plugs
- Iridium plugs — 60,000 km interval; OEM Bosch or NGK; 4 plugs on M274/M254
- Malaysia workshop cost: RM 300–500 including labour
Spark Plugs — Mercedes Petrol Engines Malaysia
Mercedes-Benz petrol engines use NGK or Bosch iridium spark plugs — change every 60,000 km. On turbocharged M270/M274 engines (C200/C180/GLC200), misfires under boost degrade the catalytic converter and can damage the turbo — do not delay plug replacement. Budget RM 350–550 for a set of 4 iridium plugs including labour. Bosch OE plugs are the factory specification — aftermarket premium plugs (NGK Laser Iridium) are an acceptable alternative. Never use copper plugs on modern Mercedes turbo engines.